MoocNoteA free tool for adding timestamped comments, questions, and links to videos. To do this on MoocNote you simply paste a link to a YouTube video into the MoocNote editor. Once the video is imported you can start to add your comments, questions, and links. The link features is particularly useful for providing students with additional resources for learning about the topics covered in your shared videos. MoocNote allows you to organize playlists (MoocNote calls them courses) of videos according to topics that you identify.

VialoguesA free service that allows you to build online discussions around videos hosted online and videos that you have saved on your computer. Registered users can upload videos to Vialogues or use YouTube videos as the centerpieces of their conversations.

VideoAntAnyone can add annotations to any publicly accessible YouTube video. To do this copy the URL of a video and paste it into the VideoANT annotation tool. Then as the video plays click the "add annotation" button when you want to add an annotation.